diff --git a/app/Models/Invoice.php b/app/Models/Invoice.php
index 304782acd6c7..f2d9924975be 100644
--- a/app/Models/Invoice.php
+++ b/app/Models/Invoice.php
@@ -1266,6 +1266,7 @@ class Invoice extends EntityModel implements BalanceAffecting
                         break;
                     } else {
                         $pdfString = false;
+                        sleep(2);
                     }
                 }
             }